[iOS][DarkMode] Updates colors in navigation bars

Updates |ConfigureAppBarViewControllerWithCardStyle| to use dynamic
colors. Refer to the following screenshots to compare the new and
current colors.

Current: https://drive.google.com/file/d/10qCWfVAOsX9qyAcsVxH2j4z0ITZxpjii
New: https://drive.google.com/open?id=1Zg41IJbdRNy_inW0XkpVf-53yGXSK5J2
New [DarkMode]: https://drive.google.com/file/d/1W5GLOqs1pQRzLFwYnXhKZbP_boemtYCQ

Bug: 976640
Change-Id: Ide94265446256cad561acea538ee1430bfa0d946
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1690852
Auto-Submit: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Peter Lee <pkl@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#675638}

ios/chrome/browser/ui/material_components/BUILD.gn

@@ -16,6 +16,7 @@ source_set("material_components") {
   deps = [
     "//base",
     "//ios/chrome/browser/ui/colors",
+    "//ios/chrome/common/colors",
     "//ios/third_party/material_components_ios",
   ]
   libs = [ "UIKit.framework" ]

ios/chrome/browser/ui/material_components/utils.mm

@@ -7,6 +7,7 @@
 #import <UIKit/UIKit.h>
 
 #include "base/mac/foundation_util.h"
+#import "ios/chrome/common/colors/UIColor+cr_semantic_colors.h"
 #import "ios/third_party/material_components_ios/src/components/AppBar/src/MDCAppBarContainerViewController.h"
 #import "ios/third_party/material_components_ios/src/components/AppBar/src/MaterialAppBar.h"
 #import "ios/third_party/material_components_ios/src/components/FlexibleHeader/src/MaterialFlexibleHeader.h"
@@ -42,8 +43,8 @@ void ConfigureAppBarViewControllerWithCardStyle(
   viewController.headerView.shiftBehavior =
       MDCFlexibleHeaderShiftBehaviorDisabled;
   viewController.headerView.backgroundColor =
-      [[MDCPalette greyPalette] tint200];
-  viewController.navigationBar.tintColor = [[MDCPalette greyPalette] tint900];
+      UIColor.cr_secondarySystemBackgroundColor;
+  viewController.navigationBar.tintColor = UIColor.cr_labelColor;
   viewController.navigationBar.titleAlignment =
       MDCNavigationBarTitleAlignmentLeading;